Boiler-cleaner.



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BDILER CLEANER.

(Lpplimion lod In? 1,1890.)

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a UNITED* STATES APATENT Orrrce.

MARSHALL M. CRAM, or MANKAro, MnvnnsorA.l

eolLEa- CLEANr-m.

SPECIFICATION forming part of Letters Patent'No. 634,521, dated OctoberY 10, 1899.

I ,application filed May 1,189 9. Serial No. 715,146. (No model.)

To all whom tm/ay concern.- boiler 4B of ordinary construction, and the Be it known that l, MARSHALL M. CRAM, a device for cleaning the same isinclosed therecitizen of the United States,residing at Manin, and it involves in its construction a lon- 55 kate,l in thecounty of Blue Earth andvState gitudinal or main pipe or conduit 2, disposed of Minnesota, haveinvented a new and useful lengthwise of the boiler, and aseries of three Y Boiler-Cleaner, ofY which the following is a branch pipes or conduits connected with and speciiication. extending oppositely from said main pipe. v This invention relates to a device intended, I In the'drawings the main pipe 2 is shown 6o primarily, for cleaning steam-boilers ofsediprovided with three of the transverse branch 1o ment or mud which collects therein, although pipes 3, thereby adapting the cleaner to a of course it can be employed with equal fathree-sheet boiler, although it will be undercility for the same purpose in connection with stoodthat .any desired number ofthe branch iues, tubes, and similarstructnres whereon pipes maybe employedas required for the 65 scale is aptto form; and the object of the particular type of boiler in connection with invention is to provide an effective Vand light which the apparatus is associated. In adaptappliance of this character which occupies a ing the cleaner to a cylindricalboiler of the f comparatively small space in the boiler and configuration shown in the drawings the which involves in its construction a series of branch pipes 3 are of a segmental curvature, 7o communicating tubes or conduits, through so as to agree in shape substantially with the 2Q which the sediment can be ejected by the shell of the boiler, and said branch pipes are pressure developed in the boiler at short inadapted to lie in close proximity to the lower tervals and which can be movedback and side ofthe boiler. L j

forth,in said boiler by the application of a' Eachof thetransversebranchpipesSis pro- 75 small amount of power to thoroughlyremove vided with a tapering loWer side,-i n which is theobjectionable substance. formed a continuous longitudinal slit a, and With these ends in view the invention con-Y at `one. side'of the Aslit an edge of the pipe is sists in the novel combination of elements extended to forma continuous longitudinal and in the construction and arrangement'of scraping edge el, which is designed to engage 8o parts, which will be Vhereinafter' fully dewith the sediment yclinging to the contiguous- 3o scribed and claimed. surface of the boiler-shell, so as to loosen the To enable others to understand the invensame `upwhen the cleaner is adj usted and tion, I have illustrated the preferred embodialso serves to deflect the same V throughthe ment thereof 'ntheaccompanying drawings, slit e into theinterior of the pipe, whence it S5 forming a part of lthis specification, andiri escapes throughthe main pipe 2j. The sevwhich-f Y Y eral transverse branchpipes 3 are spaced at Figurel is a horizontal sectional plan view suitable Vdistances apart and are connected of a steamboiler of ordinary' construction for inovementin unisonwith the main pipe 2, inclosing a cleaning apparatus constructed s0 that as the piping is moved baclrand forth 9o in accordance with the invention. Fig. 2 is within the boilerthe sediment o r scale which 4o a vertical longitudinal sectional side elevahas been lde positedwill beloosened up by` tion of the boiler andthe device therein. the scraping edges la and under the pressure f Fig. 3 is a transverse 'section taken in the Within the boiler willbe forced through the line 3 3, Fig. l, andllookingin the direction movable piping into a discharge-pipe, which 95 A of the arrow. Fig. 4c is a detail sectional will be presently referred to. y

view showing a modification of theadjusting The branch pipes are disposed/crosswise of mechanism for the piping. Fig. 5 is a detail the boiler, and they are adapted to pass encross-sectional View of one of the transverse tirely along the same, eachof them operating bnhpipes- 1 j uponasheet of theboiler, but not crossing theV roo Lilreicharacters denote like and correspondjoints between the plates.

5o ing parts'in each of the severalfiigures of the The main pipe 2 is connected to the upper drawings sides of the three branch pipes near their mid- In the drawings l have represented a steamdles, and the end branch pipes are secured to .upon the bottom of the the extremities of the main pipe, while the intermediate branch pipe is located equidistant betweenthe end branch pipes.

Thedi'scharge-pipe is denoted by 5, and it exten ds through one of the heads of the boiler and is located in parallelism with and is in communication with the main pipe 2, and it is provided beyond the head of the boiler with the blow-off valve G, which `can be opened when it is desired to rclean the boiler, thereby to remove the accumulated sediment.

The elbow or bent pipe 7 is connected at one end by means of a universal couplingS of some suitable kind with the inner end of the discharge-pipe 5, and it is connected, likewise, by the universal coupling 9 with the short pipe 10, which in turn is connected with the upper side of the main pipe 2 near the middle of the same, by reason of which construction the material can escape from the boiler when the blow-off valve 6 is open, no matter what position therein the several transverse or branch pipes 3 may occupy, as the ilexible connecting system just described maintains the proper communication between the mainy pipe 2 and the discharge-pipe 5.

In operation the cleaning attachment is moved back and forth inthe boiler, and for effecting this action any convenient means may be employed, and in Figs. 1 and 2 the actuating mechanism includes in its organization a lazy-tongs 10n of familiar construction, which 4is vjointed at its inner end to the adjacent end of the. movable attachment and is likewise coupled to the lug or bracket 12 Vwithin the boilerand upon what is herein illustrated as the left-hand head,whereby upon the operation of the said lazy-tongs corresponding movements of the cleaning device are obtained.

The lazy-tongs connection 10L is extended and contracted by the fixed feed-screw 14, which extends through the stuffing-box 14ETL in the head of the boiler and which is suitably fixed against endwise movement.

The threaded end of the screw 14 is embraced by the nut 15, which is secured to the lazy-tongs at a convenient point in its length and at the junction of two of its levers. The feed-screw is provided at its outer end with the hand-wheel 15a, by which it can be rotated, thereby to effect the expansion and contraction of the lazy-tongs and the reciprocation of the cleaning device with the several branch pipes in proximity to the under side of the boiler, and at this time the blow-off valve 6 will be opened, so that the pressure in the boiler can force the sediment which collects boiler through the apertures 4 into the rigidly-connected parallel branch pipes 8, from thence into the connecting-pipe 2, and then into the dischargepipe 5 through the pipe-sections 10 and 7, and the delivery end of the pipe 5 is disposed beyond the boiler and can of course be located at any point desired.

The device described can be advantageously employed for cleaning all kinds of'tubular and cylindrical articles; but vwhen used in boilers the pressure generated thereincan be utilized as the force for expelling the deposits,

yand it will be understood that any suitable organization of mechanism can be employed for drawing the cleaning ,device back and forth in the inclosing structure.

In Fig. et the framing or skeleton of piping.

is actuated through the agency of sprocket mechanism involving a primary power-shaft, the end of which can be located outside of the boiler andprovidcd with a crank to turn the same.

The shafts 20 are supported within the boiler at opposite sides ofthe forward branch tube 3, and they are carried bybearings within the boiler, and one of them projects through a stulng-box in said boiler and is-providcd with a hand-crank 21 to rotate the same. Said shafts 2O are provided with sprocketwheels 22, located in the boiler and connected by a sprocket-chain 23, which in turn is secured to said front tube.. By turning the crank-shaft 2O in one direction the tubular skeleton cleaning device can be moved one way, while rotating said crank-shaft in the reverse direction will result in moving the cleaning device in the opposite direction, and

these actions will alternate until the boiler is thoroughly cleaned.

` Changes in the form, proportion, size, and the minor details of construction within the scope. of the appended claims may be resorted to without departing from the spirit or sacritlcinganyof the advantages of this invention.

Having thus described the invention, what I claim is.-

l. A boiler-cleaner including a main pipe provided with a series of transverse pipes having slits or apertures therein, a dischargepipe connected with said main pipe and passing through the boiler and provided with a valve, and a flexibly-jointed piping connecting said main pipe with the discharge-pipe, substantially as described.

2. A boiler-cleaner including a main pipe provided with a series of transverse pipes having slits or apertures therein, a dischargepipe passing out through the boiler and connected with said main pipe by a universal coupling and provided with a valve, and means for operating the boiler-cleaner to move the same back and forth in a boiler, substantially as described.

3. A boiler-cleaner including a main pipe provided with a series of equidistantly-disposed transverse pipes having slits or apertures upon their under sides, a discharge-pipe connected with the main pipe and provided with a valve, a lazy-tongs securedto the main pipe, a feed-screw provided with a nut connected with the lazy-tongs, and a bracket to which said lazy-tongs is connected, substantially as described.

4. A boiler-cleaner including a main pipe provided with a series of equidistantly-dis- IOD IIO

posed transverse Vcurved pipes having slits or apertures upon their under sides, a dischargepipe connected with the main pipe and provided with a valve, a lazy-tongs connected with the main pipe, a feed-screw extending through a stuffing-box in the boiler and provided with a nut connected with the 'lazytongs intermediate its ends, and a bracket in the boiler to which said lazy-tongs is conneeted, substantially as described.

5. A boiler-cleaner including a longitudinal main pipe provided with a series of curved pipes extending oppositely therefrom having slits or apertures upon their under sides, a discharge-pipe provided With a valve, a ilexible system of piping connected respectively with the main pipe and with the dischargepipe, and means including a feed-screw, connected with the main pipe for moving the same and the connected curved pipes along a boiler, substantially as described.

6. A boiler-cleaner comprising a main pipe having a plurality of transverse branch pipes provided in their lower sides with continuous longitudinal slits extending vfrom end to end thereof, the sides of the pipe being tapered, substantially as described.

7. A boiler-cleaner comprising a main pipe having a plurality of transverse branch pipes provided at their lower sides with continuous longitudinal slits, and also with continuous longitudinal scraping edges, substantially as described.

8. A boiler-cleaner comprising a movable Y main pipe having a plurality of transverse branch pipes rigid therewith, each branch pipe being provided with a tapering lower side having therein a continuous longitudinal slit, and one side of the slit being extended to form a continuouslongitudinal scraping edge, substantially as described. y In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two Witnesses.

MARSHALL M. CRAM. Witnesses:

L. A. LINDER, FRANK J. LEONARD. 

